Definition of evidence for Students. 1  1 : a sign which shows that something exists or is true : indication They found evidence of a robbery. 2  2 : material presented to a court to help find the truth about something.
Francis Crick and his American colleague, James Watson, discovered the double helix structure of DNA. For this fundamental finding Francis, James and Maurice Wilkins were awarded the Nobel Prize for Physiology or Medicine in 1962.nravelling the double helix Stories The discovery of the structure of DNA by James Watson and Francis Crick in 1953 is one of the most famous scientific discoveries of all time. Unravelling the double helix Stories.
Rosalind Franklin discovered that DNA has the shape of a double  helix by using x-ray technology. However, two scientists got the  credit for discovering the double helix shâ¦ape of DNA, James Watson  and Francis Crick. Watson and Crick get the credit for discovering  the double helix shape because Rosalind Franklin died in 1958, and  the first Nobel prize for discovery wasn't awarded until 1962.